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What is the difference between char s[] and char *s?
...o world";
will place "Hello world" in the read-only parts of the memory, and making s a pointer to that makes any writing operation on this memory illegal.
While doing:
char s[] = "Hello world";
puts the literal string in read-only memory and copies the string to newly allocated memory on the...
Why are we not to throw these exceptions?
...
Exception is the base type for all exceptions, and as such terribly unspecific. You shouldn’t ever throw this exception because it simply does not contain any useful information. Calling code catching for exceptions couldn’t disambiguate the intentionally thrown excep...
How can I make a WPF combo box have the width of its widest element in XAML?
...to bind the MinWidth of the outermost container (it's a Grid for both Aero and Luna) to the ActualWidth of PART_Popup. You'll be able to have the ComboBox automatically synchronize it's width when you click the drop button, but not before.
So unless you can force a Measure operation in the layout ...
HTML select form with option to enter custom value
...
HTML5 has a built-in combo box. You create a text input and a datalist. Then you add a list attribute to the input, with a value of the id of the datalist.
Update: As of March 2019 all major browsers (now including Safari 12.1 and iOS Safari 12.3) support datalist to the level ne...
css z-index lost after webkit transform translate3d
...e translate3d webkit transform to animate these elements off the screen, and then back onto the screen. After the transform, the elements no longer respect their set z-index values.
...
Can someone explain Microsoft Unity?
...tern (we use it here), but I just can't really grasp this Unity thing yet, and I think it's the next step in our application design.
...
Java: convert List to a String
...; list = Arrays.asList("foo", "bar", "baz");
String joined = String.join(" and ", list); // "foo and bar and baz"
If you have a Collection with another type than String you can use the Stream API with the joining Collector:
List<Person> list = Arrays.asList(
new Person("John", "Smith"),
...
Why doesn't print work in a lambda?
...thon 2.x, print is a statement. However, in Python 3, print is a function (and a function application is an expression, so it will work in a lambda). You can (and should, for forward compatibility :) use the back-ported print function if you are using the latest Python 2.x:
In [1324]: from __future...
Check play state of AVPlayer
...ItemDidPlayToEndTimeNotification
object:<#A player item#>];
And to track playing you can:
"track changes in the position of the playhead in an AVPlayer object" by using addPeriodicTimeObserverForInterval:queue:usingBlock: or addBoundaryTimeObserverForTimes:queue:usingBlock:.
Exampl...
How do you redirect to a page using the POST verb?
...irect somewhere, the HTTP "Location" header tells the browser where to go, and the browser makes a GET request for that page. You'll probably have to just write the code for your page to accept GET requests as well as POST requests.
...